Emulate3Buttons not honored

[Peter Hutterer]

On Mon, Jul 25, 2011 at 03:34:37PM -0700, walt wrote:
> On 07/25/2011 07:27 AM, Kevin Van Workum wrote:
> > ...
> > I'm trying to get my "ORtek Wireless Touchpad keyboard" to emulate 3
> > buttons...
> > ...
> > Note that X reports that it 'Found 3 mouse buttons', but in fact there
> > are only 2 real buttons...
> 
> Sounds like you already know more about this stuff than I do :)
> 
> Just an idle observation:  I have a four-button trackball mouse that
> xorg announces as having 9 buttons.  According to xev, the buttons are
> 1:  Left click
> 3:  Right click
> 2:  buttons 1 and 3 pressed at the same time
> 8:  Left tiny-button click
> 9:  Right tiny-button click
> 
> That's all. Buttons 4-7 don't exist.  Someone in this mailing list
> explained this numbering system to me a long time ago.  Shame I can't
> remember it now :(

4-7 are the four scroll directions, so any physical button 4+ gets mapped to
logical button 8+.
see also http://who-t.blogspot.com/2009/06/button-mapping-in-x.html

Cheers,
  Peter

> Anyway, my point is that button numbering schemes can be sneaky, and you
> may learn something interesting if you run xev and click the buttons in
> random ways, maybe including double-tapping the touchpad, etc.